Machine for sewing bags



' D 1s,192s. 1,695,718

F. RICKS Er m.

MACHINE FOR SEWING BAGS Filed Feb. 8, .1523 :5 Sheets-Sheet 1 .J,.1 I v V I n) 16 if I)! FL RICKS in- AL MACHINE FOR SEWING BAGS Filed Feb. s, 1923 :s Sheets-Sheet v haw.

Dec. 18, 1928. 1,695,718

' F. RlcKs ET"AL ucums FOR sawme mes Fil ed Feb. 8, 1925 s Shee t s-Sheet 2" Patented Dec. 18, 19 28,

UNITED STATES PATENTDFFlC-E.

BEE KICKS AND ROBERT GOW. REID, OF LEICESTER, ENGLAND,- ASSIGNORS TO UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A, CORPORATION- x OF NEW JERSEY.

mcnmn 's snwme BAGS.

Application filed February 8, 1923, Seriai No. 617,702, and in Great Britain March}, 1922.

The invention relates to sewing the corner seams of leather bags or like articles the parts for, which, such, for instance, as

the side andbottom pieces, are secured top i gether by stitches passing through their abutting edges at an inclination to both the adjoining faces of the article.

One objectof the invention is to render unnecessary other article is made incident to the use of internal supporting forms which must fill and. accurately fit the interior of the bag if they are to affordan eflicient, and satisfactory support during the sewing of the corners. With this object in view one feature of the invention contemplates the use of a born or the like which .enters the work and affords purely local support to the parts at the place and time'where' and when they work as the latter changes from one to an-'.

other of widely differing 1positions in the course of this operation. urther features of the invention which are concerned with supporting the work internally in such manrting the work.

ner as contrasted with sup internall by a bag filling orm are the pro vision 0 a movably mounted bag entering horn orthe like h'avin at its work engaging extremity-a swivel ta letwhich seats itself snugly on the work'in the difierent positions which the work takes up during the operation; and theprovision of a bag entering horn operatively connected to the sewing machine and mounted to have freedom for both rotary movement and movement along the line of feed of the work duringsewing. In sewing bag corners or the like the placing of the stitches'with accuracy in def- 'inite locations in the bag when sewing around a bag corner at the end of a'bag is an important consideration and; it is a further object of theinvention to make effective provision for thus placing the stitches In pursuance of this object a feature of the invention comprises the provi sion of meansrfor supporting the work exthe accurate cutting-to shape 10 of the pieces of stock of which the bag 01" its being eifective ternally engagement of different faces thereof at the sewing location by respective parts of said means having faces in mutumovement when the bag is swung to sew round one of its end corners so as by reason of such restraint to temporarily locate the work in a definite relation, along the line of'feed, to the sewing instrumentalities during such end corner sewing; and a further feature comprises the provision! of movable indicating means operatively coupled both to the machine and workpiece and moving so as to indicate readily and with precision to the operator the point which the. sewing has attained on the work or the point on the work which the ,next stitch will enter when "the sewing operation is being conducted at "or near a portion of the together with means restraining such free" work, such as a bag 'end corner, which he cannot with readiness fldirectly inspect.

The above and other objects and features of the invention will become manifest upon consideration of the "followingdescription of the construction shown in the accompanying drawings which embodies the various features of the invention in their preferred forms. In the drawings 'Fig 1 is a perspective view showing so much of a curvedneedle lock stitch sewing machine asis "necessary to illustrate the application ofthe preferred form of the invention'thereto; Fi'g2 is a side elevation partly in section and on a larger. scale of the horn mechanism shown in Fig 1; Fig. 3-is a front elevation of a part of the horn mechanism; Fig. dis a sectional view on'line 4-4, "Fig ,2; Fig. 5 is'a sectional elevation on, an enlarged scale on line 5, Fig. 2;" Fig 6 shows a section of a stages in the operation of sewing? round a corner of a bag.

The invention 1s.-shown applied to a lock stitch sewing machine having the construction and mode *of'operation of the machine shown and described in Patent No. 473,870

dated April 26,1892.; This machine is provided with stitch formin and workfeedin these surfaces are at an inclination to the needle path, and that this inclination may be varied by adjustment of the support. A. horn 1 is also provided which is fixed by pins 2 in a block 3 secured by a pin 4 on the lower end of a spindle 5 the axis of which is in alinementwith the tip 6 of the horn so that the horn may rotate about this axis without displacing the tip.' A clearance or horn gap of someseven inches between the tip 6 and the block 3 and of some ten inches per pendicularly of the line in which the tip- 6 and spindle 5 lie is provided. The horn 1 comprises two ractically straight limbs 7 and 8 joined y a straight portion 9. Both these limbs 7 and 8 lie in a single plane with the spindle 5 and that limb 7 connected to the block 3 is substantially perpendicular to the spindle while the other limb 8 makes an. angleof some twenty-five degrees to saidlimb. The spindle 5 extends through a bearing 10 which has a shaft 11 perpendicular to the hearing. The shaft 11 is rotatably mounted in a member 12 and is prevented from endwise movement therein by a washer 13.and screw 14. The member 12 is rotat-w ably mounted on a shaft 15 fixed in brackets 16, 17 secured to the frame. The shaft 15 is above and-slightl in front of the cam shaft 18 of the mac inc and is parallel to the line of feed during sewin and the arrangement is such that the orn extends downwardly from the member 12 and can be swung by it, or can swin it, in avertical plane extending per ndic arly of the cam shaft about the sha 15. The normal' tion of the horn is such that the spindlz 5 extends downwardly and forwardly at an angle of some five de ees to the vertical WhlCh an le is incr as the horn is swung about sai shaft15 tobring the horn tip at its lower end away from engagement with the work. The member 12has a rearwardly extending arm 19 in which is trunnioned a block 20- through which slides a rod 21 pivoted at its lower end to a lever 22-pivoted on the frame of the machine at 23 and actuated by a cam on the camshaft 18 (which may be the usual presser foot cam) so as to have the same timing of rise and fall asthe boot or-shoe Presser-foot customarily has 'when it is present inthe class of sewing machine to which these bag-sewin' parts are considered as fitted. ,The rod 21v upon it abovethe block 20 an ad'ustable nut 24 and lock nut 25 and below the lock sand confined between the block 20 and a col ar 26 on the rod 21) a compression s ring 27 so that on upward movement of t e rod the horn is yieldingly urged against the work on the work-support 28 and is on downward move ment of the rod retracted positively from the work-operations which occur in each stitch forming cycle of operations of the machine to cause a to and fro movement of the horn tip to clamp the work at one time and free it for the feeding at another time. An arm 29 pivoted on the shaft 15 has a projecting lug 30 which, when the arm is pulled down through a rod 31 by depression against-the action of a treadle spring, of a treadle 131 to which the rod is connected, engages the arm 19 and swings the arm and member 12 about the shaft 15 and thereby work swings the horn tip away from the to give an extra clearance for insertion or removal of the bag.

Spring pressed plungers 32, bearin onopposite sides of a lug 33 projecting rom the bearing 10 normally centralize the bear ing so that it lies in a vertical plane through the needle plane, are backed up each by an adjustable stop screw 34 so that the amount of rocking movement about the axis of the shaft 11 permitted can be varied. The horn spindle 5 has a limited adjustable axial movement in the bearing 10 its upward movement being limited by a collar 35 on the spindle en aging the lower surface of the bearing am? its downward movement be- 0 limited by an adjustable collar 36 ihreaded on to the upper end of. the s ine) engaging the top of the bearin is axial freedom of the horn spindle allows of the horn tip rising and falling slightly across the path of its swinging movement on the horizontal shaft 15 aforementioned so that its tip may move rectilinearly along the A inner (upper) surface 37 of the lower of the two pieces to be joined as it moves into the corner formed by the two pieces which corner may be as Wlll be understood differently positioned according to the thicknesses of the two pieces which are entirely located by their outer faces. A compression spring 38 confined between the lower face of the col-\ lar 36- and the bottom of a recess 39-formed in the bearing 10 .is sufficient to balance the.

to lie in different directions in the bag and the horn is counter-balanced by a weighted arm 40 projecting from the block 3. The

rotation of the horn is limited, by appro-- priate stop screws 41, 41 in the arm 40 with i either of which a pin 42 extending from the member 12 may abut, to an angle of someless than forty-five --degr'eesto either I stock.

, let) extended'for some little distance on each side of the needle plane. As the sewing pro-.

. vented from taking u side of a central position in which the horn limbs lie extending forwardly towards the operator in a vertical plane perpendicular of the cam shaft. I

The horn tip 6 is spherical and the work is actually engaged by a small tablet or roll 43 having a s herical seat for the spherical horn tip so t at the tablet while securely held on the horn tip can freely rock on'the- .latter in any direction.

Tipping movement of the roll 43 about the tip 6 on a horizontal axis when no work is in the machineis limited by a pin 60 projecting from the tip. The tip is thus prea position from which it would not readlly seat itself in the angle formed by the two pieces of stock when it is swung into engagement with the The face of the tablet opposite to that in which is the sphericalseat engages the inner surface of the upper of the two. pieces of stock to be 'jdined. -The inner face of the other piece of stock is engaged by the edge face of the tablet which is perpendicular to the aforementioned face of the tablet.

During sewing the tablet 43 acts to hold the two pieces of stock, securely against the two mutually perpendicular external work.

supporting faces of'the work support 28' and this action is (owing to the size of the tabceeds into. abag-end corner a .point 'is reached at which the tablet is struck by the inside of the corner formed by the work pieces. The offset of this corner from the needle plane is such that the operator can be certain that between the point at. which this contact occurs and the point at which 1 the bag must be swung round to carry the stitching round the bag corner there is room at the very least for a complete stitch it being understood that the-rotatable shaft 11 allows the tablet to move. bodily with the ba during these corner stitching operations.

aving' made this last mentioned stitch,

i the operator stops the machine momentarily and. ascertains therelationship of a pointer 44 and a scale 45, The pointer 44 and an arm 46, having a rounded end which projects into a recess formed in a boss on the block 3, are, clamped by a hand-nut 47 on a rod 48. By loosening the nut 47 thepointer'and arm may be relatively adjustedto initially set the pointer. The rod 48 has on it acollar .49 againstwhich the ointer and arm are clamped and is rotatab y mounted in a bearing'50 onthe pin 42 being held in the bearing'by a screw and washer 51. The.

' scale 45.is formed on the lower end of the pin 42. When the pointer 44 is in-"line with. a definite one ofthe index marks on the scale 45 it is an indication that-the work ,is in a position at which it has to be turned. to

another stitch either of full length or a. x

shortened one he does so, after altering the posit-ion of the feed-length controllever if a shortened stitch is requisite, by allowing the machine to run for one revolution only.

This revolution-completed the operator cuts out the feedmotion altogether and causes the machine to put in one or more corner stitches as he gradually swings the bag round on its corner. It will be understood that theneedle pricks into the work at positions either at the sa'mepoint orat very closely adjacent points on the one surface of the work but emerges during these corner stitches at positions successively spaced round the corner on theother face of the work. As the bag is swung round the tablet rotates with ,it and as soon as the work has been swung through a right an 1e (and is once more in full contact with t e plane faces of thejexternal work support) and the needle has once pierced the work and a stitch been set in this new position the feed mechanism is once more thrown intooperation.

To steady the workiin this turning posi tion and to prevent the stitchesbeing drawn into the work when inserted diagonally at---- the corner and alsoto maintain the pointor points atwhich the needle. enters the work, when inserting stitches diagonally at.

a square'corner, in line with the line of points at which the needle enters the work when stitching along a strai ht side a shallqw groove 61 isfformed in t efneedle plate 1 in and transversely across the face of the lower external wink-supporting face of the work-support 28 lntowhich groove the-baglie corner'where it rests on said face sinks some- "what when the bag is resting. on that corner and'which groove therefore at that time resists feeding movement of the work along that face so that the operator may ha'vea certain amount of, assistance from this part in limiting the movement of the work at that time to a purely swinging movement.

Figure 7. illustrates the relative position ing along a straight side of the bag, the ta let being at this time eentrally alined ;with the groove. g

- In Figure 8 the tablet and groove are-stlll in the same relative position and the stitching bas -proceeded along the side ofthe bag until the inside of the end of the'bag is; just in engagement with the ed e ofthe tablet. -In"Figure 9 the tablet as been moved I .120 of the tablet 43 and groovefil while stitchlaterally about the axis of the shaft 11 by themovement of the bag which is now in a position to be turned for stitching at the corner.

Figure 10 shows the bag after it has been turned to put in a stitch 62, at the corner, at which time the feed has been cut out and the tablet has returned to its centralized, although somewhat raised, position.

Figure 11 shows the bag again turned and the first stitch 63 of a fresh run put in, the

' tablet being displaced laterally in the opposite direction to that shown in Figure 9 and Figure 12 shows the tablet again centralized and the first fewrstitches of the fresh ticles having, in combination, stitch forming devices, means for externally supporting the i work with both faces adjacent a corner at an inclination-to and intersecting the needle path, an internal su port past which the work is fed, means or retaining the support at the sewing point during the sewin of a straight eddge and permitting it to shi t from sideto si e of the sewin point in the line of feed as the ha is turne to locate the stitches about an en corner.

2. A machine for sewing bags or like articles having, in combination, stitch forming devices, means for externally supporting the work with both faces adjacent a corner at van inclination to and intersecting the needle 3 path, a movably mounted bag entering horn aving at its work engagingti auniversally swivelled tablet for interna y supporting the work in its sewing. V

3. A machine for sewing bags or like articles having, in combination, stitch forming devices, means for externally supporting the work with both faces adjacent a corner at an inclination to and intersecting the needle different pbsitions during the path, and a bag entering horn mounted for rotary movement during the sewing about an axis passing through its work enga in tip and or movement along the line of ee 4. A machine for sewing bags or like articles having, in combination, stitch forming devices, means for externally supporting the work with both faces adjacent a corner at an inclination to and intersecting the needle path, a bag entering horn mounted for roaxis passing throu h its tip, an

tary movement during the sewin about an tablet at the tip 0 the horn for internally supporting the partsat the sewing point.

5. A machine for sewing bags or like articles having, in combination, stitch forming aswivel I devices, means for externally supporting the work with both faces adjacent a corner' at an inclination to and intersecting the needle path, and an internal, support for engaging the parts at the sewing point, and means for actuating the internal support to clamp and release both parts of the work during each stitch forming and work feeding cycle.

6.- A machine for sewing bags or like articles having in combination, stitch forming devices, means for externally supporting the work with both faces adjacent a corner at an inclination to and intersecting the needle path, a bag entering horn having a work engaging" tip for internally sup orting the parts at the sewing point, an mechanism for advancing and retracting the horn during each stitch forming and work feeding cycle.

7 A machine for sewing bags or like ar- 1 ticles having, in combination, stitch forming devices, means'for externally supporting the work with both faces adjacent a corner at an inclination to and intersecting the needle path, and a bag entering horn having a pivot shank, a work engaging tip in alinement with saidshank and having a gap for the work between itstip' and shank.

8. A machine for sewing bags or like articles having, in bmation, stitch forming devices, means for externally supporting the work with both 'facesadjacent a corner at an inclination to and intersecting the needle path, a' bag entering horn having a ivot shank, a tip in alinement with said s ank and a horn gapfor the work between the tip and shank, and a bearing for the shank in which it is free to rotate. and move axially.

9. A machine for sewing bags or like articles having, in combination, stitch forming devices, means for externally supporting the work with both faces adjacent a cornerat an inclination to and intersecting the needle path, a bag entering horn having a shank in I alinement with its tip and a horn ga. for

the work between the tip and shank, a r-- ing for the shank in which it isf'ree to rotate, and mechanism for oscillati the hearing crosswise of the feedwdurin t ,e sewin 10. A machine for sewing a articles having, in combination, stitch form- .ing devices means'for externally supporting the work with both facesadjaeent acorner at an inclination to and intersecti the needle path, a bag entering horn havmg'a shank 1n alinement withitstip and a hornga for the work between the tip and shan a bearing forthe shank in which it is free to rotate, and means for supporting the bearing point.

tfo ksiwing in the line of or crosswise of the ee a 11.=A machine for sewing bags or like articles having, in combination, stitch forming devices, means for externally supporting the work with both faces adjacent a corner at an inclination to and intersecting the needle path, a bag entering horn having a pivot shank, a tip in alinement with said shank at right angles to the line of feed, and a swivel tablet at the tip of the horn.

12. A machine for sewing bags or like articles having, in combination, stitch forming devices, means for supporting the work externally having work engaging faces in mutually perpendicular planes inclined to the needle path and allowing free movement of thework in sewing astraight section, and means for restraining such free movement to locate the work with relation to the stitch forming devices when it-is swung to sew around oneof its end corners.

13. A machine for sewing bags or like articles having, in combination, stitch forming devices, and a work support having work engaging faces in mutually perpendicular planes at an inclination to the needle path and having a groove extending across one of said faces in the plane of the needle to locate the end corner while sewing about it.

14. A machine for sewing bags or like in combination, stitch form ing devices, means for supporting the work to sew a corner seam, and means for indicating the relation of an end corner to the sewing pointas the sewing of a straight section is completed.

15. A machine for sewing ba s. or like articles having, in combination, stitch forming devices, means .fofexternally supporting the work with'both faces adjacent a corner at an inclination to and intersecting the needle path, an internal support for engagin the parts at the sewing point and movab e in e line of feed when engaged by an end corner of the bag, andan indicating device actuatedby said movement to indicate the relationof the, end corner to the sewing 16. A'machine for sewing b 'or like articles havingin combination, stitch forming devices, unyielding work-su porting means for engaging both external filces ad jacent a corner and positioning them at an inclination to and intersecting the needle path, and a yieldingly mounted internal sup port for. engaging andsupporting the work at the sewing point.

17. A machinearticles having, in combination, stitch forming devices, a-work-support having unyielding devices,

able to lie in for sewing ba s or 11kt I ing work-engaging faces in mutually perpendicular planes at an inclination to the needle path, a bag-entering horn, and means for R yieldingly pressing the horn tip into the angle between the faces of the work-support. 18. A machine for sewing'bags or like articles having, incombination, stitch formunyielding work-su porting means for engaging both external jacent a corner and positioning them at an inclination to and intersecting the needle path, a bag-entering horn mounted to swing 7 freely during the sewing about an axis pass ing through its tip and for movement along the line of feed, and means, for yieldingly pressing the tip into the. angle between the internal faces of the work at thesewing point.

19.A machine for sewing bags or like articles having, in combination, means for externally supporting the work with both faces adjacent a corner at an inclination to the needle path, a rotary horn freely movdifferent directions within the work during the sewing, and supporting means for the horn permitting movement of the'horn along the line of feed during the sewing. Y 20. A machine for sewin bags or like articles having, in combination, means for externally supporting the work with both faces adjacent acor'nerat an inclination to, the needle path, a horn freely movable about L an axis to lie in different" directions within the work, and a support for the horn mounted to swing inithe line of feed.

21. A machine for sewing bags or like articles having, in combination, means for externally supporting the-work with both faces adjacent a corner at an inclination to the "needle'path, a horn freely'rotatable' about an axis passing through its tip to lie in different directions within the workpiece during the sewing, mounted to swing in transversely thereof. I

'22. A machine for sewing bags or like articles having, in combination, stitch forming .devices,vmeans for externally support-- ing the work with both faces adjacent a corner at an inclination to and intersecting the needle path, an internal support past which the work' is fed and means for retaining the the line of feed and support at the sewing point during the sewing of ;a, straight edge while permitting it t'o shiftto one side of the sewing point in the direction of feed as the seam approaches the end corner of the bag.

- FRED KICKS;

ROBERT cow. REID.

aces ad- 70 v and a support for the horn 1 v 

